Alexander f



N0. 608,882. Patented Aug. 9, |898.

A. F. LITTLE.

VALVE.

(Appnczion mea Jan. 1o, was.)

NITE 'Tanne' ATENE Einen..

ALEXANDER E. LITTLE, or PHILADELPHIA, rENNsYLvANIA, AssIeNoR or oNE-I-IALE To ANDREW ARMSTRONG, DENNIS MCDREARTY, FRANCIS MCRREARTY, MIcIIAEL E. REILLY, AND .IoIIN J. REILLY, 0E SAME PLACE.

VALV.

SPECIFICATION forming part of Letters Patent No. 608,882, dated August 9, 1898. Application filed January 10, 1898. Serial No. 666,172. (No model.)

To @ZZ whom t may concern:

Be it known that I, ALEXANDER F. LITTLE, a citizen of the United-States, residing in the city and county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements iuValves, of which the following-'is a full, clear, and exact description, reference being had to the aecompanying drawings, forming apart of this specification.

This invention relates to an improvement in valves, and more particularly to the class of airvalves used in connection with the pneumatic tires of bicycle and other wheels.

The invention comprises various novel features of construction and organization of parts whereby a simple, durable, and effective valve is secured, all as will be hereinafter particularly described and claimed.

In the drawings, Figure L is a side elevation of myimproved valve as enlarged. Fig. 2 is a similar elevation looking in the direction of the arrow. Fig. 3 is a vertical section, as on the line ec .fr of Figi. Fig. 4 is an elevation, on a smaller scale, of several parts of the valve detached. Fig. 5 is a transverse section, as on the line y y of Fig. 3.

-Ais a shell or casing the lower end of which is contracted, as at ci, to afford an internal annular shoulder a and a reduced orifice co2, and the upper end is externally screw-threaded, as at a3, and provided with diametrically opposite slots a4. l/Vithin this casing is contained a tube or barrel B, the lower end of which is contracted to form a shoulder?) and a perforated nipple b', to which is fitted an annular gasket 292, that rests upon the shoulder a in the casing. At points below the gasket the nipple is preferably provided with lateral perforations or portspb'f. The barrel preferably projects above the shell or casing and is provided with suitably-located lateral lugs or projections b4, that are fitted to and guided in the slots in the casing, thus permitting vertical, but preventing rotary, movement of the barrel.

Extending` loosely through the nipple and within the barrelv is a stem C, the lower extremity of which is screw-threaded and iitted to the tapped bottom of a cup-Shaped valve use of a screw-cap is obviated.

be fitted thereto and the stem thereby turned v in a manner to adjust the valve longitudinally of the stem, and thus regulate to a nicety the tension of the spring and, perforce, the pressure of the valve against its seat.

Screwed onto the casing is a collar bwhich, bearing upon the lug b4, maintains the barrel in place. By manipulating this collar the barrel may be adjusted to spread the gasket tightly against the wall of the casing, and thereby insure a perfectly air-tight connection.

On the upper end of the barrel'is fitted a cap D, provided with diametrically opposite depending arms d, which register with and are guided in the slots in the casing, the lower ends of the arms having outwardly-projecting teats el.. Loosely surrounding the cap is a screw-threaded collar cl2, which is adapted to be screwed onto the casing when the cap is applied, the'collar thus bearing against the teats and, perforce, drawing the cap tightly against the opposing end of the barrel to seal the same. Preferably the cap is provided with a rubber disk cl3, and the edge of the barrel is beveled to insure a still more effectual sealing of the barrel. The upper end of this barrel is also preferably internally screwthreaded, as at ZJ, to receive the male nipple of an air-pump, as below mentioned.

It will be seen that by the construction just described the cap is drawn directly down upon the end of the barrel and that therefore the undue wearing of the packing incident-t0 the This same advantage applies to the vertical adjustment of the barrel as respects the valve-seat.

The cap is preferably provided with an external projection d4, which may be used as a screw-driver to operate the head on the valvestem.

T0 remove the cap preparatory to the ap- IOC) plication of an air-pump thereto, the collar d2 isunscrewed from the casing, the collar remaining` loosely on the cap. The nipple, if female, of the pump is screwed onto the shell, or, if male, is screwed into the the threaded portion of the barrel. The air during the action of the pump Will be forced through the perforations in the nipple, and thus unseat the valve against the force of the spring, the air in consequence escaping through the vent thus formed between the valve and its seat and passing by Way of the opening to the tire. Vhen the operation of the pump is arrested, the Valve will automatically resume its seat, and thus effeetually seal the nipple b and prevent the escape of the compressed air from the tire.

l. The combination of the shell provided with an internal shoulder, a vertically-movable non-rotatable barrel therein provided With a gasket resting upon said shoulder, means for vertically adjusting said barrel, a valve bearing normally against said gasket, and a spring acting to maintain said valve in normal position.

2. The combination of the shell provided With an internal shoulder, a barrel therein provided with a gasket resting against said shoulder, means for longitudinally guiding said barrel and preventing its rotation,means for longitudinally vadjusting said barrel, and a valve coacting with said gasket.

3. The combination of the slotted shell, the

vertically-movable barrel therein provided With a valve-seat and with studs or projections fitted to the slots in said shell, a collar on the shell coacting With said studs or projeetions, and a valve coacting with said seat.

4. The combination ofthe shell, a vertically-movable non-rotatable barrel therein provided with a nipple and a valve seat, means for vertically adjusting said barrel, a valve bearing normally against said seat, and a spring acting to maintain said valve in normal position.

5. The combination of the shell, the barrel therein provided With a perforated nipple, a gasket on said nipple, a valve, and means to maintain the same seated against the gasket.

t'. The combination of the laterally-slotted shell, the barrel therein, the valve and its coacting parts, the vertically-movable cap itted to said shell, and means for vertically adjusting said cap.

7. The combination of the laterally-slotted shell,the cap with depending arms iitted to the slots in said shell, said arms having lateral projections, and a screw-collar on the shell engaging said projections.

In testimony whereof I have hereunto afiiXed my signature in the presence of two sub scribing Witnesses.

ALEXANDER F. LITTLE.

/Vitnesses:

ANDREW V. GROUPE, WALTER C. PUsEv. 

